Business Details
33 Years
experience
Emergency
services
Your Trusted Plumbing & Heating Experts in Watford
Established in 1993, Gas Mark 1 has built a reputation as a leading provider of domestic heating and plumbing services in Watford and the surrounding areas. As a family-run business, we prioritise quality installations, exceptional value, and professional customer service. Our dedicated teams specialise in boiler and central heating installations, bathroom and kitchen renovations, and fireplace solutions, all supported by Gas Safe registered engineers. With a 4-storey showroom in Watford, we collaborate with our sister company, Herts Bathrooms and Kitchens, to offer a comprehensive one-stop shop for design, supply, and installation. Our in-house apprenticeship programme ensures a skilled workforce capable of delivering high-quality, tailored solutions.Over 50% of our new work comes from customer recommendations, reflecting our commitment to reliability and excellence. We provide emergency plumbing and heating repairs, power flushes, and maintenance contracts, serving Hertfordshire, Bedfordshire, Buckinghamshire, and North West London. Our engineers are trained to handle all aspects of central heating, gas appliances, and plumbing systems, ensuring safety and efficiency. Customer testimonials highlight our professionalism, attention to detail, and ability to complete projects with minimal disruption. With decades of experience, we remain dedicated to evolving with industry standards while maintaining our core values of trust and craftsmanship.
Services
Boiler Installation
Central Heating
Plumbing Maintenance
Bathroom Installations
Fireplace Services
Details
- Year established: 1993
Highlights and features
- We have over 30 years of experience in domestic heating and plumbing.
- Our engineers are Gas Safe registered and trained in-house.
- We offer a complete one-stop shop for home installations.
- Emergency repair services are available across Hertfordshire and beyond.
- Over 50% of our work comes from customer recommendations.
Associations and certifications
- Gas Safe Register
What people say
Fantastic workmanship
Professional and efficient
Minimal disruption
Excellent customer service
Highly recommend
Services
Boiler Installation
Our Gas Safe registered engineers provide hassle-free boiler installations, ensuring safety and efficiency. We handle all models and brands, offering tailored solutions for residential properties. With competitive pricing and expert aftercare, we guarantee reliable heating systems that meet modern standards.
Central Heating
We specialise in installing and upgrading central heating systems, including underfloor heating and solar solutions. Our engineers diagnose and repair faults, ensuring optimal performance. Regular maintenance services extend system longevity and improve energy efficiency across Hertfordshire and beyond.
Plumbing Maintenance
Emergency and routine plumbing services cover leaks, blockages, and appliance installations. Our skilled team handles bathroom and kitchen repairs, shower pumps, and tiling. Available for urgent call-outs, we prioritise quick, durable solutions for residential clients in Watford and surrounding areas.
Bathroom Installations
We offer bespoke bathroom installations, combining functionality with aesthetic appeal. Our dedicated teams manage projects from design to completion, ensuring minimal disruption. With showroom displays and expert advice, we deliver tailored solutions to suit all budgets and styles.
Fireplace Services
Our comprehensive fireplace service includes design, supply, and installation of gas and electric fires. We ensure compliance with safety standards while enhancing home aesthetics. With showroom displays and expert guidance, we help customers choose the perfect heating solution.
People
Jason
Heating Technician
Jason is a skilled heating technician known for his professionalism and attention to detail. He specialises in boiler and fireplace installations, consistently receiving praise for his clean, efficient work and customer-focused approach.
Patrick
Showroom Advisor
Patrick provides expert advice in our Watford showroom, helping customers select the best heating and plumbing solutions. His knowledge and patience ensure clients receive tailored recommendations aligned with their needs and budget.
Carl
Lead Engineer
Carl leads complex heating projects, known for his problem-solving skills and work ethic. He ensures installations meet high standards, with testimonials highlighting his punctuality, efficiency, and ability to handle challenging systems.
Ashton
Installation Engineer
Ashton delivers efficient heating installations, praised for his hard work and attention to detail. He collaborates with clients to ensure projects meet expectations, maintaining a tidy workspace throughout the process.
Rhys/Reece
Apprentice Engineer
Rhys/Reece is an apprentice engineer demonstrating strong technical skills and a commitment to learning. Under supervision, they contribute to installations while gaining hands-on experience in plumbing and heating systems.
Questions
What services does Gas Mark 1 offer?
We provide boiler installations, central heating systems, plumbing repairs, bathroom/kitchen renovations, and fireplace services. Our Watford-based team handles both emergency and scheduled projects.
Are your engineers Gas Safe registered?
Yes, all our heating engineers are Gas Safe registered, ensuring compliance with UK safety standards for gas appliance installations and repairs.
Do you offer emergency plumbing services?
Yes, we provide emergency call-outs for plumbing leaks, blockages, and heating failures across Hertfordshire, Buckinghamshire, and North West London.
Which areas do you cover?
We serve Watford, Hemel Hempstead, St Albans, Harrow, Edgware, and surrounding areas in Hertfordshire, Bedfordshire, Buckinghamshire, and North West London.
Can you help with bathroom installations?
Yes, our dedicated teams manage full bathroom installations, from design to completion, ensuring tailored solutions with minimal disruption to your home.
Reviews (5)
Mr. H.
Nov 27, 2023
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Expensive 15 minutes
We had our boiler booked in for a service recently. After about 15 minutes the engineer informed me that it would be worth replacing the magni filter - not essential but maybe worth it. - saying that the boiler was fine. He said he was reluctant to take this off to look at (part of the service) in case it broke, pointing out that there were signs of corrosion (not much from what I could tell).
It was gone 3pm so maybe this was a factor.
So, the boiler check/service took 15 minutes if Im generous and include our little chat. The next day after thinking about the boiler service, I spoke to you on the phone. Looking on line bestheating.com informs that a boiler service should take between 30 minutes and an hour. Previous services weve had back this up. If I take my car to a garage to be serviced, Im offered either a full service or a part service. These are priced accordingly. Come on Gas Mark 1, maybe time to reflect on your pricing and service pun intended. Yours disappointedly,
Mr H
We had our boiler booked in for a service recently. After about 15 minutes the engineer informed me that it would be worth replacing the magni filter - not essential but maybe worth it. - saying that the boiler was fine. He said he was reluctant to take this off to look at (part of the service) in case it broke, pointing out that there were signs of corrosion (not much from what I could tell).
It was gone 3pm so maybe this was a factor.
So, the boiler check/service took 15 minutes if Im generous and include our little chat. The next day after thinking about the boiler service, I spoke to you on the phone. Looking on line bestheating.com informs that a boiler service should take between 30 minutes and an hour. Previous services weve had back this up. If I take my car to a garage to be serviced, Im offered either a full service or a part service. These are priced accordingly. Come on Gas Mark 1, maybe time to reflect on your pricing and service pun intended. Yours disappointedly,
Mr H
Philip
Nov 14, 2021
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I needed a new hob and was limited by size. I called 4 companies and they only wanted to refit the kitchen. Gas Mark1 were excellent from start to finish. They told me exactly what they would do to resolve my needs and the work which was completed yesterday was excellent. The electrician/gas specialist and fitter were top guys. I paid them and they well deserved the business. My sincere thanks!!
Carolyn Bryant
Feb 28, 2021
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Recently had a vaillant combi boiler fitted by Gas Mark 1. Couldn't fault them on anything. From first getting a quote (which was extremely reasonable) to installation all concerned were very professional and friendly. Wouldn't hesitate in using them again and thoroughly recommend.
Joanne Gibbons
Feb 15, 2021
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Great service! Completely professional, cleaned up perfectly & their engineers were a pleasure to have in the house. Thank you for the prompt quote and installation of our new boiler!
Chris Osborn
Jan 18, 2021
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Tom and Tom came and fitted a new water main from one side of my house to the other as main under floor was leaking. They are both very polite very clean and tidy and left my home as they found it.
Carpets up in bedrooms and put back down no problems. And work to government guide lines masks ex. Very happy and would and have recommended to others.
Carpets up in bedrooms and put back down no problems. And work to government guide lines masks ex. Very happy and would and have recommended to others.
